Switch cabinet and its circuit breaker trolley position detection device and application method

Abstract

The invention discloses a switch cabinet as well as a breaker trolley position detection device and an application method thereof. The breaker trolley position detection device of the switch cabinet comprises a reflector, a laser sensor and a control module, the reflector is mounted on a contact arm of a switch cabinet breaker trolley, the laser sensor is a rotatable laser transceiver with rotating and rotation angle detection functions; the switch cabinet comprises the breaker trolley position detection device; and the application method comprises the steps of comparing a rotation angle of the laser sensor with a calibration angle and determining whether the trolley is pushed in place. The switch cabinet and the breaker trolley position detection device thereof can realize breaker trolleyposition detection, and the application method can determine whether a movable contact and a static contact are contacted in place and whether pushing-in depth is qualified or not, thereby being applicable to breaker trolley position identification of a 10-35kV switch cabinet in an operation process and timely pre-warning an equipment state.

Description

technical field [0001] The invention relates to the field of switchgear state detection, in particular to a switchgear and its circuit breaker trolley position detection device and application method, which can be used to detect the position detection of 10-35kV switchgear circuit breaker trolley, determine whether the dynamic and static contacts are in place, push Whether the penetration depth is qualified. Background technique [0002] The 10-35kV switchgear is a large number in the power system and is the equipment that directly supplies power to users. The power failure loss caused by the failure of the switchgear during operation is far greater than the value of the switchgear itself. Data statistics show that in recent years, the contact heating defect of the circuit breaker trolley of the switchgear is on the rise. In severe cases, it will cause the switchgear to burn out. Therefore, it is of great significance to ensure the safe and stable operation of the switchgea...

AI Technical Summary

Problems solved by technology

[0003] At present, in China, the diagnosis of heating defects of switchgear circuit breaker trolleys mostly starts with thermal sensors, passively detecting the temperature of the contacts to find out whether there is heat in the contacts. exact situation

At the same time, the current judgment on whether the trolley of the circuit breaker of the switchgear is in place is mostly judged from the experience of the operation and maintenance personnel, and the trolley is pulled out after a power outage to check whether there are signs of overheating on the contacts. There are problems of inaccurate judgment and poor timeliness

In short, there is no device in China that can realize the intelligent identification of the position of the 10-35kV switchgear circuit breaker trolley, and there is no systematic research on the position detection device of the 10-35kV switchgear circuit breaker trolley

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